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From: "H. Nikolaus Schaller" <hns@goldelico.com>
To: galak@codeaurora.org, andy.shevchenko@gmail.com,
	Rob Herring <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>,
	Mark Rutland <mark.rutland@arm.com>,
	Ian Campbell <ijc+devicetree@hellion.org.uk>,
	Linus Walleij <linus.walleij@linaro.org>,
	Alexandre Courbot <gnurou@gmail.com>
Cc: devicetree@vger.kernel.org, linux-gpio@vger.kernel.org,
	linux-kernel@vger.kernel.org, letux-kernel@openphoenux.org,
	kernel@pyra-handheld.com,
	"H. Nikolaus Schaller" <hns@goldelico.com>
Subject: [PATCH v4 4/7] gpio: pca953x: define masks for addressing common and extended registers
Date: Thu, 26 Apr 2018 19:34:59 +0200	[thread overview]
Message-ID: <602635f43a68cac5cfb973528320f2304e10b178.1524764101.git.hns@goldelico.com> (raw)
In-Reply-To: <cover.1524764101.git.hns@goldelico.com>
In-Reply-To: <cover.1524764101.git.hns@goldelico.com>

These mask bits are to be used to map the extended register
addreseses (which are defined for an unsupported 8-bit pcal chip)
to 16 and 24 bit chips (pcal6524).

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
---
 drivers/gpio/gpio-pca953x.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c
index 2b667166e855..fc863faa3ce4 100644
--- a/drivers/gpio/gpio-pca953x.c
+++ b/drivers/gpio/gpio-pca953x.c
@@ -56,6 +56,9 @@
 #define PCAL6524_DEBOUNCE	0x2d
 
 #define PCA_GPIO_MASK		0x00FF
+#define PCAL_GPIO_MASK		GENMASK(4, 0)
+#define PCAL_PINCTRL_MASK	(~PCAL_GPIO_MASK)
+
 #define PCA_INT			0x0100
 #define PCA_PCAL		0x0200
 #define PCA_LATCH_INT (PCA_PCAL | PCA_INT)
-- 
2.12.2

  parent reply	other threads:[~2018-04-26 17:35 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-26 17:34 [PATCH v4 0/7] pcal6524 extensions and fixes for pca953x driver H. Nikolaus Schaller
2018-04-26 17:34 ` [PATCH v4 1/7] gpio: pca953x: convert register constants to hex H. Nikolaus Schaller
2018-04-28 16:30   ` H. Nikolaus Schaller
2018-04-26 17:34 ` [PATCH v4 2/7] gpio: pca953x: add more register definitions for pcal953x H. Nikolaus Schaller
2018-04-26 17:34 ` [PATCH v4 3/7] gpio: pca953x: add more register definitions for pcal6524 H. Nikolaus Schaller
2018-04-26 17:34 ` H. Nikolaus Schaller [this message]
2018-04-26 17:35 ` [PATCH v4 5/7] gpio: pca953x: fix address calculation " H. Nikolaus Schaller
2018-04-26 17:35 ` [PATCH v4 6/7] DTS: Bindings: pca953x add an optional vcc-supply property H. Nikolaus Schaller
2018-04-26 17:35 ` [PATCH v4 7/7] DTS: Bindings: pca953x: add example how to use interrupt-controller and gpio-controller H. Nikolaus Schaller

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